class ContactsController < ApplicationController
  before_filter :authenticate_user!, except: [ :index ]
  load_and_authorize_resource except: [ :index, :create, :suggestion, :pending ]
  before_filter :exclude_reflexive,  except: [ :index, :create, :suggestion, :pending ]
  before_filter :create_authorization, only: [ :create ]
  before_filter :create_filled_params, only: [ :create ]

  helper_method :current_subject_contacts_to

  def index
    params[:subject] = subject = profile_or_current_subject!
    params[:d]    ||= 'sent'
    params[:type] ||= subject.class.contact_index_models.first.to_s

    @contacts = Contact.index(params)

    respond_to do |format|
      format.html { render current_subject_contacts_to(@contacts) if request.xhr? }
      format.json { render json: @contacts.map(&:receiver), helper: self }
    end
  end

  def create
    relation_ids = params[:relations].map(&:to_i)

    params[:actors].split(',').each do |a|
      c = profile_or_current_subject.contact_to!(a)
      # Record who is manipulating the contact, mainly in groups
      c.user_author = current_user
      c.relation_ids = relation_ids
    end

    flash[:success] = t "contact.new.added.other",
                        actors: params[:actors].split(',').map{ |a| Actor.find(a).name }.to_sentence,
                        relations: relation_ids.map{ |r| Relation.find(r).name }.to_sentence

    redirect_to request.referrer || { action: :index }
  end

  def update
    # Record who is manipulating the contact, mainly in groups
    @contact.user_author = current_user

    # FIXME: This should be in the model
    params[:contact][:relation_ids].present? &&
      params[:contact][:relation_ids].delete("0")

    @contact.update_attributes(params[:contact])

    respond_to do |format|
      format.html {
        if @contact.errors.blank?
          redirect_to @contact.receiver_subject
        else
          render :action => 'edit'
        end
      }

      format.js
    end
  end

  def destroy
    relation_ids = []

    if params[:reject].present?
      relation_ids << Relation::Reject.instance.id
    end

    @contact.relation_ids = []

    respond_to do |format|
      format.js
    end
  end

  # Return a suggestion for this contact
  def suggestion
    @contact = current_subject.suggestions.first

    respond_to do |format|
      format.html { @contact.present? ? render(partial: @contact) : render(text: "") }
      format.json { render json: @contact }
    end
  end

  def pending
    @contact = current_subject.pending_contacts.last

    respond_to do |format|
      format.html { @contact.present? ? render(partial: @contact) : render(text: "") }
      format.json { render json: @contact }
    end
  end

  protected

  def current_subject_contacts_to(contacts)
    contacts.map{ |c|
      current_actor.blank? || c.sender == current_actor ?
        c :
        current_actor.contact_to!(c.receiver)
    }
  end

  private

  def exclude_reflexive
    if @contact.reflexive?
      redirect_to home_path
    end
  end

  def create_authorization
    authorize! :create, Contact.new(sender: Actor.normalize(profile_or_current_subject!))
  end

  def create_filled_params
    errors = []

    %w( actors relations ).each do |p|
      if params[p].blank?
        errors << "#{ p } cannot be blank"
      end
    end

    if errors.present?
      flash[:error] = errors.to_sentence
      redirect_to action: :index
    end
  end
end